New holland tc30 3 point lift

[Thefinishedlook]

Tractor had box blade left up for 2 weeks noticed it was up lowered it by handle while off and hydraulics won’t work now. It has no front end loader, and is a 3x9 manual transmission, fluid was fine changed any ways and so was filter still not responding at all. I can lift arms and they just fall have turned the speed valve and blew air through opening and lift arms raise, cycled diverter valve engine almost dies so I would believe pump is good what am I missing I also tried to loosen supply tube to rear hydraulic to let air out not sure how to bleed it or check hydraulic pressure need some help!

 

[nyone]

Just lift and lower the handle in a slow cycle while the engine is on. It self bleeds as long as theres enough fluid in it.

I'm surprised the arms stayed up for 2 weeks.

 

[WM75Guy]

Welcome to TBN. I don't like to leave pressure on the hydraulic system when parked. I lower my arena drag with the engine off all the time, it weighs more than a box blade. Same with the FEL. Here is the troubleshooting page from my TC40DA repair manual. Just some things to check.